Home / 18,787.78-25,927.26-10,404.28

Finding the Fourth Proportional to 18,787.78, 25,927.26 and 10,404.28

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Solution

The fourth proportional to 18,787.78, 25,927.26 and 10,404.28 is: 14,357.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787.78 : 25,927.26 = 10,404.28 : x
  2. Step 2: Convert to fraction form
    18,787.78/25,927.26 = 10,404.28/x
  3. Step 3: Cross multiply
    18,787.78x = 25,927.26 × 10,404.28
  4. Step 4: Simplify right side
    18,787.78x = 269,754,472.67
  5. Step 5: Solve for x
    x = 269,754,472.67/18,787.78
  6. Step 6: Final answer
    x = 14,357.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.